DTC Logic

Diagnosis Procedure
1.CHECK USB HARNESS
Visually check USB harness.
U1243 display unit
U1255 satellite radio tunerRCTA system operation
1. Side BSW/RCTA Indicator Light
2. BSW/RCTA Indicator
The RCTA system can help alert the driver of an
approaching vehicle when the driver is backing
out of a parking space.
When the shift position is in R (Reverse) and the
vehicle speed is less than approximately 5 mph
(8 km/h), the RC ...
Low tire pressure warning
If the vehicle is being driven with low tire
pressure, the warning light will illuminate.
A "Tire Pressure Low - Add Air" warning
also appears in the vehicle information display.
When the low tire pressure warning light
illuminates, you should stop and adjust the
tire pressure of all four ...
Center speaker
Description
The AV control unit sends audio signals to the BOSE speaker amp. The BOSE
speaker amp. amplifies the
audio signals before sending them to the center speaker using the audio signal
circuits.
Diagnosis Procedure
1.CONNECTOR CHECK
Check the AV control unit, BOSE speaker amp. and s ...